Results 41 to 50 of about 592 (89)
Global periodic solutions in a plankton-fish interaction model with toxication delay
Nonlinear Engineering, 2018 In this paper, a plankton-fish interaction model is proposed and analyzed with the help of delay differential equations. Firstly, the elementary dynamical properties of the system in the absence of time delay is discussed.
Sharma Amit
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The spin-orbit resonances of the Solar system: A mathematical treatment matching physical data
, 2013 In the mathematical framework of a restricted, slightly dissipative spin-orbit model, we prove the existence of periodic orbits for astronomical parameter values corresponding to all satellites of the Solar system observed in exact spin-orbit ...
Antognini, Francesco +2 more
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Advanced Nonlinear StudiesWe show the existence of unbounded connected components of 2π-periodic positive solutions for the equations with one-dimensional Minkowski-curvature operator −u′1−u′2′=λa(x)f(u,u′),x∈R, $-{\left(\frac{{u}^{\prime }}{\sqrt{1-{u}^{\prime 2}}}\right ...
Ma Ruyun, Zhao Zhongzi, Su Xiaoxiao
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, 2017 Generic bifurcation theory was classically well developed for smooth differential systems, establishing results for $k$-parameter families of planar vector fields.
Novaes, Douglas Duarte +2 more
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On the period function of Newtonian systems [PDF]
, 2013 We study the existence of centers of planar autonomous system of the form $$(S) \quad \dot x=y,\qquad \dot y = -h(x) - g(x)y - f(x)y^2.$$ We are interested in the period function $T$ around a center 0. A sufficient condition for the isochronicity of (
Chouikha, A. Raouf, Timoumi, Mohsen
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Transactions of the American Mathematical Society, 2019 This work is mainly motivated by the study of periodic wave train solutions for the so-called Gurtin-McCamy equation. To that aim we construct a smooth center manifold for a rather general class of abstract second order semi-linear differential equations
A. Ducrot, Pierre Magal
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Global bifurcation of homoclinic solutions of hamiltonian systems
, 2002 We provide global bifurcation results for a class of nonlinear hamiltonian systemsComment: 25 ...
Secchi, S., Stuart, C. A.
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Arab Journal of Mathematical Sciences, 2019 A nonlinear modified form of Bass model involving the interactions of non-adopter and adopter populations has been proposed to describe the process of diffusion of a new technology in the presence of evaluation period (time delay).
Rakesh Kumar +2 more
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Complete polynomial vector fields in simplexes with application to evolutionary dynamics.
, 2004 We describe the complete polynomial vector elds and their xed points in a nite-dimensional simplex and we apply the results to dieren tial equations of genetical evolution models. AMS Classication. Primary: 34C07 , secondary: 34C23, 37Cxx.
N. Yousif
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Impact of migration on epidemiological dynamics with saturated incidence rate
, 2018 Recently an SIS epidemic reaction-diffusion model with Neumann (or no-flux) boundary condition has been proposed and studied by several authors to understand the dynamics of disease transmission in a spatially heterogeneous environment in which the ...
A. Al-Qahtani, S. Aly, Fatma Hussien
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